I could've cited the entire finalized USMCA agreement but you struck me as an individual completely uninterested in reading long textual FACTS, preferring to know the Coles Notes summary of what actually occurred, which the Atlantic did actually provide.
Don't believe me, nor the Atlantic, here's the entire USMCA agreement. I suspect, however, you'll never bother to actually read it because you aren't really interested in knowing actual facts that might conflict with your own personal partisan beliefs.
https://ustr.gov/trade-agreements/free-trade-agreements/united-states-mexico-canada-agreement/agreement-between